WGU D115 Unit 5 Exam Questions and Answers
(COMPLETE Solutions)2023
Which two processes are involved in platelet activation?
Cyclooxygenase-1 (COX-1) inactivation
Aggregation
Adhesion - correct answers ✅Platelet activation involves three linked
processes: (1) adhesion, (2) activation, and (3) aggregation. Platelet
activation stimuli include epinephrine, thrombin, and collagen.
Select four common causes of anemia from the list below.
Increased red cell destruction
Chronic blood loss
Severe bleeding
Impaired erythrocyte production
Blood transfusion - correct answers ✅Impaired production of erythrocytes,
increased red cell destruction, severe bleeding, and chronic blood loss can
cause anemia.
explain why the nurse practitioner should ask the patient about her
paresthesias and ataxia. - correct answers ✅Without the presence of
,WGU D115 Unit 5 Exam Questions and Answers
(COMPLETE Solutions)2023
intrinsic factor, vitamin B12 will not be absorbed effectively from the
gastrointestinal tract.
Describe what causes pernicious anemia. - correct answers ✅Pernicious
anemia is caused by vitamin B12 deficiency, which is often associated with
the end stage of type A chronic atrophic (autoimmune) gastritis.
Autoimmune gastritis impairs the production of IF, which is required for
vitamin B12 uptake from the gut.
Select three possible causes of lymphadenopathy from the options below.
Inflammatory condition
Lipid storage disease
Neoplastic disease
Cardiac disease
Peripheral vascular dysfunction - correct answers ✅There are multiple
causes of lymphadenopathy. It may be caused by neoplastic disease, so all
lymphadenopathies must be closely followed and evaluated.
Lymphadenopathy may also be caused by an immunologic or inflammatory
condition and by lipid storage disease; this type of lymphadenopathy is
usually widespread, including the liver and spleen.
, WGU D115 Unit 5 Exam Questions and Answers
(COMPLETE Solutions)2023
What is the most common cause of iron deficiency anemia (IDA) in children
during the first few years of life?
Dietary insufficiencies
Absorption problems
Blood loss
Increased iron requirement - correct answers ✅Insufficient dietary iron is
the most common cause of IDA in children during the first few years of life.
Which stressor triggers sickling?
Increased plasma volume
Increased oxygen tension of the blood
Decreased plasma osmolality
Low temperature - correct answers ✅Low temperature causes
vasoconstriction, slowing blood flow, leading to RBC deoxygenation, which
triggers sickling.
cause of ITP - correct answers ✅In 70% of ITP cases, there is an antecedent
viral disease that stimulates production of antiplatelet antibodies that bind
(COMPLETE Solutions)2023
Which two processes are involved in platelet activation?
Cyclooxygenase-1 (COX-1) inactivation
Aggregation
Adhesion - correct answers ✅Platelet activation involves three linked
processes: (1) adhesion, (2) activation, and (3) aggregation. Platelet
activation stimuli include epinephrine, thrombin, and collagen.
Select four common causes of anemia from the list below.
Increased red cell destruction
Chronic blood loss
Severe bleeding
Impaired erythrocyte production
Blood transfusion - correct answers ✅Impaired production of erythrocytes,
increased red cell destruction, severe bleeding, and chronic blood loss can
cause anemia.
explain why the nurse practitioner should ask the patient about her
paresthesias and ataxia. - correct answers ✅Without the presence of
,WGU D115 Unit 5 Exam Questions and Answers
(COMPLETE Solutions)2023
intrinsic factor, vitamin B12 will not be absorbed effectively from the
gastrointestinal tract.
Describe what causes pernicious anemia. - correct answers ✅Pernicious
anemia is caused by vitamin B12 deficiency, which is often associated with
the end stage of type A chronic atrophic (autoimmune) gastritis.
Autoimmune gastritis impairs the production of IF, which is required for
vitamin B12 uptake from the gut.
Select three possible causes of lymphadenopathy from the options below.
Inflammatory condition
Lipid storage disease
Neoplastic disease
Cardiac disease
Peripheral vascular dysfunction - correct answers ✅There are multiple
causes of lymphadenopathy. It may be caused by neoplastic disease, so all
lymphadenopathies must be closely followed and evaluated.
Lymphadenopathy may also be caused by an immunologic or inflammatory
condition and by lipid storage disease; this type of lymphadenopathy is
usually widespread, including the liver and spleen.
, WGU D115 Unit 5 Exam Questions and Answers
(COMPLETE Solutions)2023
What is the most common cause of iron deficiency anemia (IDA) in children
during the first few years of life?
Dietary insufficiencies
Absorption problems
Blood loss
Increased iron requirement - correct answers ✅Insufficient dietary iron is
the most common cause of IDA in children during the first few years of life.
Which stressor triggers sickling?
Increased plasma volume
Increased oxygen tension of the blood
Decreased plasma osmolality
Low temperature - correct answers ✅Low temperature causes
vasoconstriction, slowing blood flow, leading to RBC deoxygenation, which
triggers sickling.
cause of ITP - correct answers ✅In 70% of ITP cases, there is an antecedent
viral disease that stimulates production of antiplatelet antibodies that bind
